Adjustable door support and coupling



June 11, 1935. E. BOMMER 4, 8

' ADJUSTABLE DOOR SUPPORT AND COUPLING Original Filed Jan. 11, 1952 'INVENTOR- EmzZBwrz 7728] M ATTORNEY;

Patented June 11, 1935 I PATIENT OFFICE ADJUSTABLE DOOR SUPPORT AND COUPLING Emil Bommer; Brooklyn, N. Y.

Original application January 11, 1932, Serial No. 585,832, nowiPatent No. 1,978,736. Divided and this application 617,643

1 Claim.

' This invention relates to means for supporting a door at difierent elevations, and relates more particularly to a support and coupling for adjustably supporting a door upon a door check and closer of the kind which is inserted in a recess in the floor.

An object of the invention is to provide in connection with the supporting pintle at the lower end of the door an improved coupling device whereby to support the door at the elevation desired for operation by the door check and closer.

In the use of door checks and closers of the kind placed in a depression in the floor, difficu1- ties are encountered in mounting and maintaining the door for swinging movement at the precise elevation desired. The difiiculties in this regard may take various forms, such, for example, as countersinking the door check and closer to the right depth in the floor, which may consist of wood, concrete stone or other material; in providing a vertical pintle of the right height in cooperation with the door check and closer; and in rigidly connecting the door attaching bar to the pintle so that the door cannot move rela-,

application for patent Serial No. 585,832, filed,

January 11, 1932, for Cam mechanism for door check and closer.

The nature of the invention, its general principles and objects above referred to, as wellas other objects and advantages, and the manner in which the new and novel features of construction and operation may be embodied in practical form and means, will be hereinafter more fully described, with reference .to the example illustrated in the accompanying, drawing, in which:

Figure 1 represents a sectional view in elevation of an adjustable support and coupling made in accordance with my invention, the same being illustrated in connection with a door check and closer, fractionally shown;

, Fig. 2 is a fragmentary top plan view of the support and coupling detached from the door; Fig. 3 is a detail View partly in section of the door attaching bar head, wedge device, and set June 16, 1932, Serial No.

screw shown in a position to be assembled, the door'attaching bar being partly broken away; and

Fig. 4 is a detail view of' the wedge device.

Referring with more particularity to the'ac- '5 companying drawing, the numeral l0 denotes in general the rear portion of an elongated casing of the type which is adapted in accordance with the usual practice to beplaced ina'suitable out or cavity in the floor construction. In the bottom wall I I of the casing is provided a circular threaded opening l2 which is closed and sealed by means of a circular screw plug I 3. For rotatively receiving the lower end of the pintle l 4, upon which the door is supported, a cup-shapedbearing i5 is countersunk in the central inner face of the plug I3; and in axial alignment with the bearing IS, the top wall is of the casing is made with an annular vertically extending bearing ll through which the vertical pintle extends. Opposite the cup-shaped bearing Hi, there is rigidly secured to the pintle by a rivet H3 or other equivalent device, a ball-race bearing l9, and suitable antifriction balls 29 are disposed between the bearings l9 and I5, the last-named having for the balls" a suitable annular raceway or groove 2|; The vertical pintle for the door may thus be supported in an anti-friction manner upon' the plug 13 which is removably engaged in the bottom wall of the casing.

Mounted for reciprocation backwardly and forwardly on the pintle I4 is a horizontal frame having upper and lower plates 22 united at their forward ends by a front portion 23 and provided with lengthwise extending slots 24 through which the vertical pintle extends. An extension 25 projects forwardlyfrom the portion 23 and carries a coupling pin 26 whereby to connect the frame i with a cylinder 21 which is normally urged forward to effect the closing of the door'by means of a coil spring 28, said cylinder and coil spring being shown herein only fractionally.

Within the casing the vertical pintle has fixed thereto cam devices 29 and 3B which cooperate with rollers 3! in such manner that the rotary movement of the pintle (either to the right or to the left), accomplished by the opening movement of the door, will result in moving the frame longitudinally toward the casing end 32, thereby tensioning the coil spring 28; while the forward movement of the frame accomplished by the expansion of the coil spring 28 when the open door is released for closing movement, will result in turning the vertical pintle reversely, or in the direc-:

tion necessary to effectthe closing of the door. 65

the top 45.

and partly in the notch'd l.

For a full disclosure of the cam mechanism, reference may be had to the above identified parent application; and for a full disclosure of the cylinder 21, coil spring 28 together with all other parts of the complete door check and closer, reference may be had to my application for patent, Serial No. 44 L971, filed April 1'7, 1930, for a door check and closer. The constructional parts of the cam mechanism and of the door check and closer have been shown herein only for the purpose of illustrating the usefulness and advantages of the device of my present invention, and it is who understood that the adjustable support and coupling of my present invention may be associated with any type of door check and closer or other floor device having means for rotatably supporting the vertical pintle. 7

It may be important to note here that the cam mechanism above referred to is of a universal character, being movable through a circle of 360 and therefore being suitable for use in door check and closer constructionsfor a single-acting door, a double-acting door and as well for either a right or leit-hand door; and it is further to be noted that the vertical pintle it is mounted in the casing as one with the cam mechanism, for rotation either to the right or left through a full circle.

For mounting the door on the vertical pintle i i, any suitable attaching bar may be applied to the lower edge of the door in any known or approved manner. In the present embodiment, an attaching bar 33 is represented as-fittii in a mortise in the lower edge of th door and secured in place by screws 35 which extend upvzardly into the door through suitable eyes 37 provided for the purpose in the bar. Said bar is formed adjacent one end with a lateral head 38 provided with a vertical opening or hearing 39 in which the top portion of the pintle is received.

Preferably as shown, the head 38 is enlarged vertically so that the bearing 35 will fit axially along the pintle for a distance sufficient to admit of the employment and adjustment of the coupling means now to be described.

The top portion of the pintle at one side thereof is provided with a vertically extending recess is concavely curved at A l. This recess is'open at the top 2-2 of the pintle and its. concavely curved defining wall ii is tapered so that the recess gradually narrows in cross sectional area from the top to the bottom wall {33.

The head 33 is provided with a vertical notch or recess aid in open communication with the bearing opening 39 and which is also open at This notch is of angular form in cross section and is located so as to come opposite the vertical recess in the pintle.

4% denotes a wedge-like member or block which is shaped to fit partly in the recess 40 the wedge member has a conveXly formed side 41 which fits the concavely curved wall M and For this purpose,

is tapered in agreement with the tapering of said wall. The opposite'sides 48 of the Wedge member are of angular form in cross section to fit the angular notch 44. As will be understood from an inspection of Figs. 3 and 4, the sides v 18 or" the wedge and the angular notch which receives them, may taper lengthwise in substantial agreement with the lengthwise taperingrof the side 4l.

The flat side #9 of the wedge member 46 has a recess 59 therein shaped to receive the conical inner end 5| of a screw bolt 52 which is threaded through a horizontal screw-threaded opening 53 provided in the head 38. Near its top, the flat side 29 of the wedge may be provided with a recess 54 for receiving a tool adapted to be engaged under the shoulder 55 for the purpose of readily withdrawing the wedge upwardly from the vertical recesses.

With the foregoing simple construction, it will be evident that before tightening the screw bolt the head with the wedge member and hence the attaching: bar with the door thereupon may be adjusted vertically to the precise position in which is desired to have the door swing above the floor. In view of the construction shown, the screw bolt, by the application of a wrench or similar tool to the angular head 56 thereof, may be readily tightened to such an extent that the wedge member, irrespective of its position of vertical adjustment on the pintle, cannot slip downwardly under the weight of the door superimposed on the atta ing bar.

Although I have herein disclosed and described only one example and practical embodiment of my improvement aslreduced to practice, it will be recognized that the disclosure given is an example only, and is susceptible to more or less modification in the form, proportion and relative V arrangement 01'' the various parts, and I, therepintle, said connection comprising a hub portion on said fitting havinga vertical bore to receive said pintle, said pintle having a recess at its upper endopening through the side thereof, said recess increasing in depth in anupward direction, said hub borehaving a vertical recess at one side thereof opening into; said bore, a ta- I pered slip block disposed in both of said recesses, said slip block having aicircular recess, and a threaded locking element carried bythe recess. c.

EMIL BOMMER, 

